Ninja® Master Prep®

Model #: QB900

Rule the Kitchen with this revolutionary food and drink maker. Transform ice cubes into perfect, creamy frozen drinks and desserts in the blink of an eye. Make perfectly chopped salads, salsas and dips quickly without fear of uneven chunks or worse… turning the whole thing to mush.

RATINGS QB900 (24 Reviews)


Provides unique processing power for uniform cutting and ice crushing action.

The large 48oz. pitcher is perfect for making several drinks at a time, featuring an easy flip pour spout and no-slip bottom.

Following recipes, and prepping food become effortless with the 2 cup processor: Minces, Dices, Chops, Blends and Purees. No soggy results!

The interchangeable motor head allows you to prep appetizers in the processor, and quickly switch to activate the party pitcher for drinks, entertaining at its best!

Ergonomic operation with one touch pulsing creates an easy to use and safe product.

Dishwasher safe parts.

  • Patented Ninja® Technology
  • Dishwasher Safe Parts
  • 400W motor
  • 2010 Housewares Design Award Winner
  • BPA-Free

Parts & Accessories

Ninja® Breakthrough Blending! Recipe Book



Bowl Splash Guard



Bowl Blades (post 4809)



Bowl Blades (post 4210)






Power Head (Post 4809 Production)



Power Head (Post 4210 Production)



Bowl Lid



Storage Lid for Pitcher



Pitcher Splash Guard



Pitcher Blades



Gasket Kit (2)



Non-Slip Ring Kit



Anti-Spill Ring Kit (2)



48 oz. Pitcher




How do I care for my Ninja® Master Prep®?

Will the Ninja® Master Prep® blend vegetables, and fruits into drinkable liquids?

Can I make hot soup in my blender?

Is it OK to put the Ninja® Master Prep® in the dishwasher?

How much do the containers hold?

Can I use the blades for the chopper in the pitcher, or the pitcher blades in the chopper?

How many Watts is the Ninja®?

What is the blade speed?

For how long can I use the Ninja®?

What do I do if the motor doesn't start or the blades don't rotate?

Why is my food unevenly chopped?

What do I do if my food is chopped too finely, or is too watery?

Why does food sometimes collect on the Splash Guard/Safety Cover, or on the sides of the Master Prep® Pitcher, or Bowl?

What type of warranty does my Ninja® have?

Can I get additional parts (blades, containers, cups, etc.) for my Ninja® Master Prep®?

Get Healthy with Ninja


Traditional Guacamole

Tuscan Bruschetta

Babaganoosh (Grilled Eggplant Dip)

Banana Whip

Broiled Salmon with Herb Glaze

Caramel Banana Smoothie

Country Chicken Salad

Orange Cream

Creole Shrimp Po' Boy

Curried Chicken Salad

Fresh Fruit Batidos

Fresh Tomato Salsa

Frozen Hot Chocolate

Frozen Mojito

Frozen Peanut Butter Cup

Frozen Pomegranate Margarita

Frozen Toffee Delight

Key Lime Pie

Mocha Frozen Fusion Lite

Ninja Snow Cone

Orange Mojo Marinade

Skirt Steak with Chimichurri Sauce

Smokey Black Bean Soup

Strawberry Banana Smoothie

Tzatziki (Cucumber Yogurt Dip)

Watermelon Slush

White Gazpacho Soup

Pumpkin Spice Smoothie

Veggie Chowder

Quinoa and Cheese Stuffed Portobello Mushrooms

Stir-Fried Ginger Pork and Garlic Noodles

Cinnamon Almond Milk

Turkey and Stuffing Mini Frittatas

Papa's Baba Ganoush

Creamy Tomato Soup

The Mr. Grinch Smoothie

Holiday Cashew Spread

Cranberry and Cheese Pinwheels

Chunky Kale Guacamole

Greek Chopped Salad with Feta Cheese

Chicken Chile Verde

Glowing Green Smoothie

Kale and Brussels Sprouts Salad with Lemon-Mustard Vinaigrette

Chicken, Artichoke and Pesto Quesadillas

The Hydrating Hero

Bold Mexican Black Bean Soup

Frosted Orange Dream

Bohemian Chicken and Smoked Paprika Soup

Greek Marinated Chicken

Shredded Brussels Sprouts

Creamy Broccoli Pesto Pasta with Grilled Chicken


Biggest Loser Cookbook chef Devin Alexander combines two favorite Italian home-cooked dishes into one!

Spring Pea Puree

Banana Berry Breeze

Spinach, Cranberry and Avocado Salad with Poppy Seed Vinaigrette

Peter Cotton Tail Carrot Muffins

Strawberry and Apricot Swirl

Broccoli and Cheddar Stuffed Bell Peppers

Light and Healthy Artichoke Dip

Mixed Spring Salad with Sweet and Spicy Vinaigrette

Watermelon Kiwi Splash

Vinegar Coleslaw

Black Bean Hummus

Cold Beet Soup

Blueberry 'Rita

Creamy Cantaloupe Smoothie

Nutty Chocolate Fig Bites

Sweet and Spicy Summer Salsa

Cold and Refreshing Cucumber Soup

Nectarine Dreamsicles

Chocolate Banana Strawberry Chill

Cucumber Dip

Zucchini, Tomato and Olive Bruschetta

Cantaloupe Coolers

Grape Escape

The Big Squeeze

Almond Peanut Butter Chip Muffins

Artichoke and Bean Soup

Cauliflower "Rice"

Cider Sangria

Carrot Cake Smoothie

Chocolate Hazelnut Pumpkin Dip

Creamy Broccoli Soup

Corn and Red Pepper Chowder

The Spooky Spirit


Gaude A. Hughes
from Douglasville, Ga
Apr. 24, 2015

My Ninja

This is the best product I have ever purchased. The quality and price helped in my decision to buy it. I make smoothies everyday and salsa often, the kids love it and its healthy. You wont be disappointed with your purchase.
from Tarpon Springs, FL
Apr. 14, 2015

Can’t live without it

I just love this machine. I make smoothies, gravy, vegan cheese sauce, salsa and more. Easy to clean, easy to store in the fridge.
from Appleton , Wi
Mar. 27, 2015

Great product

I have owned this model for about 6 months now and I use it all the time. It works fantastic and I have had no problems with it. (other than cutting myself a few times on the blades while cleaning). The only thing that I do not like about it is I wish there were other types of blades available for the food bowl part of the appliance (such as a shredding disk or slicing disc). Otherwise its a great product.
Mary Adams
from altoona, pa
Feb. 17, 2015

love smoothies

I make frozen fruit smoothies every night, the kids enjoy mock frostys. I also use the bowl for quick prep of my veggies for eggs and sauces. The ninja never leaves my counter top.
from Atlanta, Ga
Jan. 21, 2015

Wonderful Product!!!

I bought my Ninja Master Prep at Sears, a few years ago. I LOVE it and use it daily making breakfast shakes each morning. It chops ice, fruit, vegetables.. you name it, and still works great!! I’m just glad it is still out there to buy when mine finally wears out! I can also throw it in the dishwasher which is also nice. A++++++ blender!
from Phoenix, AZ
Dec. 8, 2014

The best product of it’s kind

This is a great all-round food prep appliance that I have ever used. I have the smaller prep bowl which makes this a complete unit now. I love it and use this several times a week for various food prep situations.
Dale Beerman
from Kalispell, Mt
Dec. 2, 2014

Great for smoothies

I have a breakfast smoothie almost everyday never had a problem have had it for three years. Love it.
Daniel Halley
from West Hatfeild, MA.
Sep. 26, 2014

Ninja Master Prep.

I have owned this unit for about a year and, I Love It! I discovered with the small blending base, I have made the Best organic nut butters, puree onion/garlic base for; soups, veggie smoothies, stir fry, parchment bag cooking, the list is limitless as, I alter that puree with spices like; cayenne, parsley, also unlimited variations for specific recipes. With these ingredients, I jump to the large blend bowl and make the most incredible, healthy smoothies Ever! Like Whey protein base and go berserk from t...more

Ninja Master Prep.

Daniel Halley
from West Hatfeild, MA.
Sep. 26, 2014
I have owned this unit for about a year and, I Love It! I discovered with the small blending base, I have made the Best organic nut butters, puree onion/garlic base for; soups, veggie smoothies, stir fry, parchment bag cooking, the list is limitless as, I alter that puree with spices like; cayenne, parsley, also unlimited variations for specific recipes. With these ingredients, I jump to the large blend bowl and make the most incredible, healthy smoothies Ever! Like Whey protein base and go berserk from there, adding avocados, spinach, kale, chia & hemp seed, beets, celery, well, you get the idea. I had planned to nest in a VitaMix but I found the Ninja Master Prep a much more versatile unit capable of so much More, for so much Less, $$$! I have invested too much money with single purpose units but never have been as Pleasantly Pleased & Rewarded as I have been with My Ninja Master Prep! Thats just the tip of My Iceberg usage of food prep tools. Being a professional Chef most my life, I speak from years of Experience with kitchen gadgets and, readers This is No Gadget, it’s The real Deal in my Personal Home Kitchen! If I were to add anything to this unit, it would only be a nonslip grip surface to the motor head and, extra seals/gaskets and, a crevice cleaning tool for the hard to get to top and the blade & blade hole for perfect sanitizing. ”WOW,” what a Find for me. Thanks Ninja,
from Sheridan, AR
Jul. 28, 2014


I have had many other blenders and they always seem to mess up or you can’t clean them very well because the blade doesn’t come out. Since having this blender, I have been able to make all different kinds of recipes and I don’t have a problem cleaning it at all. I LOVE MY NINJA!! I will never go back to any other brand.
Ben Lohrke
from Loveland , OH
Jul. 9, 2014

Very good product

I bought this at walmart and it was very cheap by the way makes good fruit smoothies and it makes peanut butter, dressings by the way, I even tried to chop carrots in it works great by the way. I registered this product over the phone and the lady was very nice by the way over the phone. And I can get rid of my gnc blender because it does not work. It even chops garlic to. By the way I am very happy with ninja by the way they have good products.
from Soulsbyville, CA
Jun. 17, 2014

Ninja Master Prep

I purchased this item couple days ago. Works great. I had to figure out how to make the perfect blend. but once I did wow. Works much better then my now dead Magic Bullet. I had had for several years. Now I can make the items I love and enjoy. Totally worth the $40
Carla Rousselle
from Cobourg, ON
Jun. 16, 2014


Hey from Canada! Just bought the Mega Prep yesterday to make ice cream and sno-comes for my granddaughters. What can I say- it’s a Ninja!! It’s great not to have to get the big Ninja blender out for little chopping and mixing. I also have the Ninja slow cooker system and it’s the best one I’ve ever had. (And that’s lots- my mom gave me my 1st s/c for a shower gift 36 yrs ago) if anyone is hesitating- don’t. You won’t regret buying ANY Ninja product. Now I’m waiting for the Nutri -Ninja to c...more
from Milwaukee, WI
Apr. 8, 2014

Great for smoothies

This product is great for smoothies and is done in less than a minute. Plus I can make 2 at a time. We have been using an old blender for years and I broke the glass container. I don’t know how this product works for other things but it is great for smoothies!!!!
from Orlando, FL
Dec. 29, 2013


I love my ninja... Yet I am not happy with the way the blade is made into two parts and wears out and the second blade quits turning... They should make the two blades permanently connected.
Jul. 10, 2013

It is the perfect size for a small kitchen

I love this machine. It is the perfect size for a small kitchen - not taking up much space at all. But in the 6 weeks that I have been using it (twice daily) , I have broken (spiral fracture)the long shaft for the tall blender, and burned out the motor. Looking for parts for it - I discover that individual parts cost as much as a new blender. That sucks.
Michael Seyfried
Jan. 6, 2011

Now I find myself helping in the kitchen.

Bought my wife the Ninja at Sam's Club. Now I find myself helping in the kitchen. I love to play with this thing. It's really fun. I made some great turkey salad with some leftovers using this machine. It was a breeze. And it tasted great. Wonderful smooth texture.
Dec. 29, 2010

I just got this for Christmas and have already used it several t...

I just got this for Christmas and have already used it several time. I've used it to make baby food and also some of my favorite dishes that require lots of chopping, shredding and pureeing. It is so easy to use and works quickly. I'm definitely getting one of these for my parents.
Dec. 27, 2010


I LOVE, LOVE, LOVE my Ninja Prep. I am a client and employee of a weight loss clinic and it has helped me meet and maintain my healthy goals. We have recommended the Ninja to all of our clients. It works awesome on our protien drinks, lo cal cheesecake and decaf coffee shakes. I've used my Ninja so much that I feel like I should replace the blades. Would love to get information about where to purchase new blades, so I can continue using the Ninja in my home.
Dec. 23, 2010

I am so glad I purchased the ninja prep.

I am so glad I purchased the ninja prep. It does exactly what it said it would. I have started my Christmas dinner only took 30 sec to prepare my bell pepper celery and onion didnt even cry from the onion so impressed. Loving it
Rhonda Maza
Dec. 22, 2010

It made snow cones so quickly

I live in Florida so we don't get snow for Christmas. It made snow cones so quickly, I used it to make a big bowl of snow for my son to play in. He built a little snow person and threw snowballs. For Christmas I plan to buy a big bags of ice so we can make snow for our yard.
v. fite
Dec. 12, 2010


OMG! This is the first TV product I have ever received that delivered...not only as was promised...but MORE! I love my ninja. Got it at Kitchen Collections and bought my daughters and sister one within hours of using mine for the first time! It is a truly amazing product. I hope you all try this one. Really. I am throwing my bullet, choppers and cuisineart away! THANK YOU NINJA! Going to chop veggies for a tiny cubed salad..lol.
Wanda Stanley
Dec. 5, 2010

This is the best all around mixer/food processor I have ever use...

This is the best all around mixer/food processor I have ever used. It is fast and easy to use. It will chip ice in a second and grind raw boneless meat in a quick 1,2,3 hit of the on switch. I would recommend this to everyone. My kids are all grown and on their own and I want to get one for each of them. i love this machine.
Nov. 13, 2010

I love my ninja...

I love my ninja....I have a 8 month old lil girl and making fresh baby food for her is faster then opening a jar and I control the ingredients.It's a dream to own if your thinking about getting one then stop thinking and get one today.
Nov. 9, 2010

great very time use it

great very time use it


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Nutritionist of The Biggest Loser shares Nutri Ninja® recipes and how-to videos

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